Between the Core Ultra 9 285K and Ryzen 9 7950X3D, the Core Ultra 9 285K comes out ahead in cores and cinebench r23 (multi), while the Ryzen 9 7950X3D wins on l3 cache and tdp. Overall, the Core Ultra 9 285K scores 60.9 and the Ryzen 9 7950X3D scores 60.7 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (60.9 vs 60.7). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.
Pick the Core Ultra 9 285K if you push the hardware — gaming, on-device AI, heavy multitasking — and the extra compute headroom is worth the trade-offs. The biggest gaps in its favor are cores, cinebench r23 (multi).
Pick the Ryzen 9 7950X3D if you care most about l3 cache and tdp. Its strongest claims are l3 cache, tdp.
Both ship with comparable boost clock, so those specs don't separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity tells you both are well-rounded; the differences are about trade-offs, not quality.
Why Intel - Core Ultra 9 285K wins
- ▲Cores — 50.00% more. 24 vs 16.
- ▲Cinebench R23 (multi) — 13.83% more. 42800 vs 37600.
Why AMD - Ryzen 9 7950X3D wins
- ▲L3 cache — 255.56% more. 128 MB vs 36 MB.
- ▲TDP — 5.00 W less. 120 vs 125.
Spec comparison
Cores
| Spec | Intel - Core Ultra 9 285K | AMD - Ryzen 9 7950X3D |
|---|---|---|
| Coresⓘ | 24lead | 16 |
| Threadsⓘ | 24 | 32lead |
| Base clockⓘ | 3.7 GHz | 4.2 GHzlead |
| Boost clockⓘ | 5.7 GHz | 5.7 GHz |
| L3 cacheⓘ | 36 MB | 128 MBlead |
Platform
| Spec | Intel - Core Ultra 9 285K | AMD - Ryzen 9 7950X3D |
|---|---|---|
| Socketⓘ | LGA1851 | AM5 |
| TDPⓘ | 125 W | 120 Wlead |
| Integrated graphicsⓘ | true | true |
| DDR5ⓘ | true | true |
Benchmarks
| Spec | Intel - Core Ultra 9 285K | AMD - Ryzen 9 7950X3D |
|---|---|---|
| Cinebench R23 (multi)ⓘ | 42800lead | 37600 |
| Cinebench R23 (single)ⓘ | 2230lead | 2050 |
Spec-level deep dives
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